| Document |
Document Title |
|
JP7313505B1 |
A technique for facilitating assembly of a piston ring in a piston unit that reciprocates within a cylinder is provided. A piston unit that reciprocates in a cylinder includes a piston and a top land member attached to the piston. The pi...
|
|
JP7309109B2 |
The engine system (100) includes: a variable compression device (6, 7 and 8) including a fluid chamber (R3) in which a piston rod (6) connected to a piston (4) is moved in a direction to increase a compression ratio by a pressurized work...
|
|
JP7305490B2 |
To reduce a quantity of air bubbles remaining in a wheel cylinder.A wheel cylinder 10 comprises a cylinder 11 and a piston 12. The cylinder 11 has a union hole part 13 and a bleeder hole part 14, and the piston 12 has a piston cup 15, a ...
|
|
JP7302246B2 |
To prevent the breakage of a piston at a position of an oil guiding portion.A piston 5 includes: an outer peripheral surface 70 opposing to an inner wall surface of a cylinder 2 (cylinder); an oil ring groove 73 formed on the outer perip...
|
|
JP2023091625A |
To provide a piston and a marine internal combustion engine, which can eliminate bore polishing and stably ensure lubrication between the piston and a cylinder.A piston for reciprocating in the piston axial direction inside a cylinder of...
|
|
JP2023087813A |
To efficiently take a measure against noise of an engine.An engine includes: a first piston that is accommodated in a first cylinder bore formed in a first cylinder bank and to which a first piston pin is attached; and a second piston th...
|
|
JP2023080767A |
To provide a piston for an internal combustion engine, which has excellent adhesion of a resin coating and seizure resistance, and a method for manufacturing the same.When irradiating the outer surface of a skirt portion 18 of a piston f...
|
|
JP7286808B2 |
The plunger of the present disclosure includes: a plunger main body section that is made of sapphire, has a pillar shape, and includes a non-penetrating fitting hole extending in a central axis direction from one end portion; a core port...
|
|
JP7271912B2 |
To provide a combustion chamber structure for an engine capable of actualizing high combustion efficiency by maintaining a swirl flow in SPCCI combustion until a late period for a compression stroke.A combustion chamber of an engine body...
|
|
JP2023059355A |
To reduce friction between a piston and a cylinder by forming oil film pressure between an outer peripheral surface of a skirt part and an inner peripheral surface of the cylinder in a reliable and stable manner.A plurality of concave pa...
|
|
JP2023057088A |
To overcome a defect relating to zero gap.A method of manufacturing a piston includes: a step of manufacturing piston upper side portion and lower side portion that respectively have inside supporting elements 4 including inside joint su...
|
|
JP7260462B2 |
To provide an engine that hardly causes a liquid sagging phenomenon from an exhaust passage.A piston head PH comprises: a top ring groove 1RG in which a top ring 1R is fit; a second ring groove 2RG in which a second ring 2R is fit; an oi...
|
|
JP2023048515A |
To improve coating efficiency and productivity in applying a heat insulation material to a crown surface 9 of a piston 1 of an engine.A method for applying a heat insulation material for a piston includes the steps of: disposing a dispen...
|
|
JP7248413B2 |
A valve-piston system (20) of a cylinder of an internal combustion engine, with a piston (26) that is moveably guided up and down, with at least one inlet-side gas exchange valve (21) and at least one exhaust-side gas exchange valve (22)...
|
|
JP2023039014A |
To provide a piston of an internal combustion engine which can reduce resistance acting on the piston in a fluid lubrication state and a boundary lubrication state while maintaining the stiffness of a piston skirt at a thrust side.A pair...
|
|
JP2023508506A |
The present invention relates to a piston (16) for internal combustion engines (10), particularly V-engines. The piston has an oil discharge groove (54) provided on the outer peripheral surface of the piston (16) between the ring belt (2...
|
|
JP7230399B2 |
To provide a slide member having low opponent aggression, and excellent in seizure resistance.A slide member includes a substrate, and a hard carbon film formed on the substrate surface. In the hard carbon film, an element concentration ...
|
|
JP2023505574A |
The present invention is a piston (10) for use in an internal combustion engine, comprising a piston crown (12) adjoining the piston crown and a piston skirt (14), the piston skirt (14) having a surface (16) that abuts against the cylind...
|
|
JP2023019522A |
To provide a manufacturing method of a piston for an internal combustion engine excellent in adhesion and seizure resistance of resin coating.In a manufacturing method 20 of a piston for an internal combustion engine, the piston for the ...
|
|
JP2023009433A |
To provide a mixing valve device for realizing its stabilization by suppressing a pressure fluctuation of hot water flowing out of an exit.The mixing valve device has a mixing chamber 10 for mixing water flowing in from a water inflow po...
|
|
JP2023502016A |
The present invention is a piston unit of a working cylinder comprising a piston 1 and a piston rod 2, the piston 1 having an axial bore 3 in which the piston rod 2 is received, the piston rod 2 and the piston 1 relates to the piston uni...
|
|
JP7204948B2 |
A breathable salt core is provided that is placed in a cavity of a casting mold in order to mold a hollow part of a cast product and that is dissolved and removed after casting, the breathable salt core being formed by powder molding inn...
|
|
JP2022191534A |
To provide a piston for an internal combustion engine that can suppress adhesion of discharged coolant to a cylinder.A piston 11 includes a piston head 3 and a cylinder part 4. The piston head 3 is formed with a cooling channel 5, an inf...
|
|
JP7196553B2 |
To provide a combustion chamber structure for an engine using SI combustion and SPCCI combustion in combination for maintaining both a tumble flow and a swirl flow until a late period for a compression stroke.A combustion chamber of the ...
|
|
JP7180304B2 |
A combustion chamber structure for an engine includes a combustion chamber where SI combustion by spark ignition and CI combustion by self-ignition are conducted. A crown surface includes a cavity recessed to have a bowl-shape; a pair of...
|
|
JP7162128B2 |
A fastener driving tool with a working cylinder and a piston, the piston outer surface having a lubricant-saturated foam material that stores and dispenses lubricant into the piston-cylinder wall interface, thereby increasing the perform...
|
|
JP2022142062A |
To facilitate discharge of excessive engine oil from a cylinder.An engine 100 includes a cylinder 1 which has a center axis along a horizontal direction H1 and a piston 2 which is reciprocated along the horizontal direction H1. The pisto...
|
|
JP7144295B2 |
To provide a piston having excellent compression strength of an upper part of a pin boss.A pin hole 4 is forged-processed using an intermediate product 1 having a cavity part 2 and a spill port 5. The pin hole 4 is formed by pushing away...
|
|
JP2022135346A |
To provide a piston capable of suppressing a back flow of oil in an oil return hole.An oil jet 400 injects oil for cooling a piston toward a back surface 21 of the piston as the piston 10 has a remarkably high temperature due to combusti...
|
|
JP7137786B2 |
[Solution] A piston 1 has two pin bosses 3 disposed so as to face each other at an interval, a side wall 4 disposed on both sides of the pin boss 3, and a skirt 5 provided continuously to the side wall 4, and a pin hole 3a into which a p...
|
|
JP7131058B2 |
A piston includes a platform portion, a groove, a first skirt in a thrust side, a second skirt in a reverse thrust side, a shaft portion, at least one first through-hole in the thrust side, and a second through-hole in the reverse thrust...
|
|
JP2022538240A |
A piston (10) for an internal combustion engine comprises a shaft wall section (18) for supporting a cylinder or cylinder liner and at least one base support (20) circumferentially connected to the shaft wall section. , the base support ...
|
|
JP7105160B2 |
Provided is a stratified scavenging engine and a portable work machine that suppress THC sufficiently. A stratified scavenging engine 10 includes: a cylinder 20 having a cylinder bore 21; and a piston 30 stored in the cylinder bore 21 to...
|
|
JP2022098177A |
To provide a piston capable of suppressing resonance at a specific frequency while reducing vibration over a wide range.A piston 1 is reciprocally housed in a cylinder 2 of an engine E, and is connected to a crankshaft 8 via a connecting...
|
|
JP2022097543A |
To provide a suitable open face piston assembly.The present disclosure provides an open face piston with a circumferential groove in which a piston ring assembly is arrayed. An opening is provided between the bottom of the circumferentia...
|
|
JP2022094593A |
To efficiently improve the sliding performance of a piston, in a piston of an internal combustion engine and a manufacturing method thereof.A piston of an internal combustion engine includes a piston body that has an outer peripheral por...
|
|
JP7088954B2 |
The invention pertains to a composition based on a fluoroelastomer comprising nitrile or carboxylate-type cure sites and including a curing agent and a Br-containing marker having reactivity towards the said cure-sites, which can be cure...
|
|
JP2022088457A |
To provide a component having a surface coated with a coating for reducing wear or friction.A component has a surface coated with a coating containing MoxCryN layer utilizable in an automobile field or the like, where, x and y correspond...
|
|
JP7084234B2 |
The present embodiment relates to an internal combustion engine having an anodic oxide coating (10) formed on at least a portion of an aluminum-based wall surface facing a combustion chamber (NS). The anodic oxide coating (10) has a plur...
|
|
JP7082144B2 |
The hydraulic piston (1) constitutes a hydraulic chamber (5) with a cylinder (4) and has a cylindrical body (6) connected—from the side of the chamber (5)—by a link-stop valve (3) to a cooling and lubricating gasket valve (2) which i...
|
|
JP7079174B2 |
To strike a balance between friction loss reduction and reliability assurance between a piston and a cylinder.A compressor includes: a cylinder; and a piston reciprocating inside the cylinder in a longitudinal direction. The piston has: ...
|
|
JP7077249B2 |
To provide a gas cushion device which attains high cushion force.A gas cushion device includes: a cylinder 20; a piston 30 which slidably fits in the cylinder 20; a gas G which is enclosed in the cylinder 20 and biases the piston 30; and...
|
|
JP2022079301A |
To provide a technology capable of simply realizing mirror surface machining in a region of a center depressed portion and a valve recess portion.A crown surface of a piston is equipped with a dish-shaped center depressed portion, an out...
|
|
JP2022074388A |
To provide a piston for an internal combustion engine including an anode oxide film capable of improving abrasion resistance and providing good adhesion with a piston ring on an inner surface of a piston ring groove, and a method for man...
|
|
JP7065653B2 |
To prevent the positional deviation in the rotation direction of a slide bearing provided between the small end part of the linkage rod and the piston pin.A piston device 1 comprises: a piston 2 having a pair of boss parts 7 and 7 provid...
|
|
JP7063893B2 |
The present disclosure provides an open-faced piston with a circumferential groove into which a piston ring assembly is arranged. Openings at the bottom of the circumferential groove and between a front land of the open-faced piston and ...
|
|
JP2022067640A |
To provide a piston for an internal combustion engine and a production method of such a piston improved or at least other embodiments which are characterized in particular by a simplified and cost-effective production.The present inventi...
|
|
JP2022066724A |
To inhibit heat transmission from a piston skirt to an internal hardware without increasing the number of components.A piston 3 includes: a piston crown 31; a piston skirt 32 disposed below the piston crown 31; a piston rod 33 which defi...
|
|
JP7055066B2 |
To provide a piston that can improve heat insulation performance even under a high temperature environment.A piston 10 has a piston body 11, and a coating layer (protective layer) 40 that is formed on the piston body 11 and includes a la...
|
|
JP7051500B2 |
To provide an engine component of which a heat insulation layer has high heat insulation property and good heat drawing property.The engine component includes a metal base material, and the heat insulation layer provided on the surface o...
|
